Effect of landfill characteristics on leachate organic matter properties and coagulation treatability

被引：67

作者：

Comstock, Sarah E. H. ^{[1
]}

Boyer, Treavor H. ^{[1
]}

Graf, Katherine C. ^{[1
]}

Townsend, Timothy G. ^{[1
]}

机构：

[1] Univ Florida, Dept Environm Engn Sci, Gainesville, FL 32611 USA

来源：

CHEMOSPHERE | 2010年 / 81卷 / 07期

关键词：

Aluminum; Fluorescence excitation-emission matrix; Iron; Landfill leachate; Natural organic matter; Specific ultraviolet absorbance; HUMIC SUBSTANCES; FLOCCULATION PRETREATMENT; FLUORESCENCE; REMOVAL; ABSORBENCY; INDICATOR; EXCHANGE; DEMAND; IMPACT;

D O I：

10.1016/j.chemosphere.2010.07.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work spans landfill characteristics leachate organic matter properties and coagulation chemistry to provide new insights Into the physical-chemical treatability of stabilized landfill leachate Furthermore leachate organic matter is viewed in terms of dissolved organic matter (DOM) present in the natural environment and coagulation chemistry is evaluated based on previous leachate and water treatment coagulation studies Stabilized leachate was collected from four landfills for a total of seven leachate samples and samples were coagulated using ferric chloride ferric sulfate and aluminum sulfate Landfill characteristics such as age leachate recirculation and cover material influenced properties of DOM present in the leachate as measured by specific ultraviolet (UV) absorbance at 254 nm (SUVA(254)) and fluorescence excitation-emission matrices The coagulation performance of the metal salts was ferric sulfate > aluminum sulfate > ferric chloride and DOM removal followed the trend of color > UV254 > dissolved organic carbon > chemical oxygen demand (COD) Finally a strong association was found between increasing SUVA254 and increasing DOM removal for coagulation of both leachate and natural surface water Thus SUVA254 is expected to be a better predictor of leachate treatability in particular DOM removal than the traditionally used ratio of biochemical oxygen demand to COD (C) 2010 Elsevier Ltd All rights reserved

引用

页码：976 / 983

页数：8

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